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Prism A prism is a portion of transparen...

Prism
A prism is a portion of transparent refracting medium bounded by two plane surfaces inclined to each other at a certain angle, and the angle between the refracting faces is called angle of the prism denoted by A. The deviation produced by the prism is maximum for violet `(delta_v)` and minimum for red `(delta_r)` colour.
The deviations suffered by a ray in passing through a small angled prism is

A

`(1-mu)A`

B

`(mu-1)/A`

C

`(mu-1)A`

D

`(A-1)mu`

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